unknown hydro issues

Hello there, I'm sorry to bother, but I dunno what to do to save this grow... if there still is something to do. I bought a new light and first time tried the Advanced Nutrients line, so 2 new things for me this time. It's Somango from seeds, recirculation hydroponics, AN pH perfect master formula https://www.advancednutrients.com/feed-charts/pH_Perfect_Grow_Micro_Bloom-GLOBAL.pdf, Lumatek 600W PRO 2.9 fixture 60cm above the canopy at 25% power. Constant air exchange + small fan on the canopy. I didn't follow the exact amounts from recipe, but it's basically 40-50% in 100% RO buffered with Cana calmag agent up to 0,4EC and then I added silica first, followed with CaMg from Remo, AN base, piranha, sensiz, b52 and candy. pH is kept on 5,8-5,9 the whole time, the written data are from after I wake up. Some looks a-ok (I think) but some shows a CaMg deficiency (I think) so I extra supply a calmag from Remo. I honestly don't have a clue at this point, I feel lost.... so if anyone sees something I don't pls help. Thank you.

4 comments

Comments (4)

Cam Z

Nov 20, 2022

Is that drip constant? Are you just using hydroton? Do you have roots in the water? Are you aerating the water?

Looks like a watering problem. Looks like oversaturation on most of them.

jasongrow29

Nov 20, 2022

Replying to

it's the irrigation tab in the table, 10min watering every 4 hours loop from day 8. I did use this system twice before. Some of them looks hungry to me, would lower the irrigation and slightly rise EC help you think? roots are only in pots filled with hydroton. reservoir is under them. It's Wilma system, you can look it up here: https://atami.com/brands/wilma-systems/ I have a few constant airstones pump on + a constant pump that moves water around 1000l/min. No light leaks in.

Cam Z

Nov 20, 2022

Replying to

I can't read it. Too blurry. I don't think it would help the yellowing is likely caused by oversaturation.

I'm unfamiliar with only using hydroton and its water retention. It doesn't help that the plants are various sizes which pretty much guarantees some will get too much while others don't have enough. If it were me based on what I see I would reduce watering times and look for improvement. Might help to put them in the system when they are a bit larger next time. Maybe sprout in coco plugs and then transfer after. I know that doesn't help much this time.

I'm actually running a similar setup but I have small rockwool blocks instead of hydroton.

jasongrow29

Nov 20, 2022

Replying to

yes, I think so as well... they were all the same size and age when I transplanted them in, it seems this system is really not a good choice for growing from storebought seeds... With a closer look I find half of them doing just ok, the rest just decided to give up at some point... To my knowledge in hydroton the water can run constantly thru, in my last run I had 0,9kg of dry product and these plants were on a 15on/45off loop before I started flushing them with a far worse fixture... I'm really sad because with this it won't be even half of the last time... :( I'm also becoming a not-big fan of Advanced Nutrients. Overcomplicated, I'm definitely not using them any time soon again.